Hub for wheel-colter



(No Model.) v

' G. R. HARTMAN.

, VHUB PGR WEBB-L GOLTBR'.v No. 278,950. Patented June 5,1883.

N. PErEns, memmgnpur, www. DJ;

UNI r-En STATES PATENT OFFICE.

CHALES It.` HARTMAN, OF VINCENNES, INDIANA.

L, HUB Foa WHEEL-COMER.

SPECIFICATIONwforming part of Letters Patent No. 278,950, dated June 5, 1883.

V Application filed November t2, 1882. (No model.)

with reference to the accompanying drawings,

vin which-e Figure l represents a view, partly in section, of the entire hub and connecting parts;

Fig. 2, a detail view ofthe sleeve E, it being part ot' the hub; Fig. 3, a side elevation ofthe hub-ange A, pa-rt of yoke-arm B, and head of the axial bolt D, a bearing-piece, C, in proper position; and Figs. l, 5, and 6, details of one of the bearings G, a cross-section of the whole hub, taken as indicated by the broken line in Fig. 1, and a portion of axial bolt D.

A is a iiange provided with a hollow cylinder, having an abutting-shoulder Ain each end ofthe interior of such cylinder, against which the washers c c are forced by the bearingpieces C C, and the interior of the cylinder is provided with longitudinal ribs a. to interlock with grooves g in the exterior of the sleeve E to prevent its turning in the hub. The sleeve E is slightly tapered from one end toward the other to facilitate the casting oi' flange A and its cylinder (into which the sleeve is designed to tit snugly) without coring, and its ends are in frusto-conical forni, with abrupt shoulders,

Vand serve as journals for the hub, and turn in correspondingly-cupped bearings C C, which latter have lugs b overlapping the arms of the colter-yoke B, to prevent turning of the bearings. At 7L on that part of the sleeve resting in the cylinder of the flange, enough of the exterior surface ofthe sleeve is cut away for oilchambers to hold a sufficiency of lubricatingoil for several days7 working use, which is poured in at the oil-hole a in the cylinder, di-

rectly over one of the chambers, and, as theoil is being poured in, the opposite chamber is filled at the saine time with the upper one through the transverse groove g, when the oill hole is closed by a cork stopper, large end down, so that the larger end niay spread in the chamber to prevent the cork being lost out or pulled out Aby trash. The oil is kept in the hub and gradually fed to the journals by the close-fitting leather washers e e, and retained in the cupsl ot' the bearings C C by leather washers c e, which fit tightly on the axial bolt D and in their recesses and also by the wash ers c c, which also exclude all dust and grit from the journals. The ends ofthe hub proper (cylinder ot' ange A) break joint with the bearings C C, and make a snug lit to exclude dirt, which otherwise would absorb the oil from thewashers c c. especially designed to prevent wear of the shoulders of the hub, s that, upon the wearing away of the journals and bearings, the sleeve and bearings are replaced by new ones, which can be done at a trilling expense, as the hub will not be too short for the sleeve. Besides, as

the abutting shoulders, the p arts may be drawn up more tightly for the steady holding of the colter relatively than when the abutting shoulders are nakedly exposed to friction upon apt not to revolve but slide along in soft drawn up to prevent wabbling ot' the colter. The sleeve is designed to be made of hard wood, cast-iron, or other suitable material, and is held in its place in the hub longitudinally by the abutting bearings, which are held to their places with the rest of the hub by the axial and bearings wear away the play is taken up by the nut D. The colter-blade is riveted to the flange A, and the longer end of the cylinder, which extends through the blade, and the central hole of the blade are of the saine diameter as the hub, so that the blade cannot cut the rivets nor work them loose by bearing against theni.

The lubricating-oil having no other outlet from this hub than that of oozing through and from the leather washers'w: c to lubricate the journals h 71, and the iianged y cylinder A being cast in one solid piece in the shape shownthat is, with rib or ribs cf in interior, and shoulders in its ends and rivet-holes in its ange without ,coring, that is, drawn from the The leather washers are also ground, when the nut of the axial bolt has been they (and also washers c e) prevent'friction of one another, in which latter case the colter is boltD, and adjustably so, for as the journals IOO sand in that shape-is a verY valuable feature of economy in this hub, and besides, the axis of the cylinder or hub cannot butbe at right angles with its flange, and consequently at right angles with the colter-blade, which prevents its \\'abbli11g as it revolves. The preferred shape of the sleeve and its seat in the hub is cylindrical, with rib and groove or ribs and grooves interlocking; but an)v irregular diameter or other equivalent devices to prevent turning of the sleeve in the hub will answer; and, if preferred, the oil-hole av may be screw-threaded and a set-screw insert-V ed,`extending into the sleeve, and the ribs a and grooves g dispensed with.

On account of economy, I use this hub with the solid flange only; but, if preferred on aocount ofappearanoe, a loose fiange may be used on the opposite side of the eoltenblade to the fixed one.

That I ela-im as new, and desire to secure b v Letters Patent, is-

1. The flange A, provided with hollow eylindrieal extensions on each side, withinterior shoulders in such extensions, and with longitudinal ribs a', substantiallyv as and for the purpose described.

2. The sleeve E, having longitudinal grooves and journals 71r lz, in frusto-oonieal form, and abutting shoulders, and the middle portion, as at 717, cutaway, substantiallxv as and for the purpose described. l

3. The combination ofthe described hollow cylinder, having the flange A in one piece therewith, and provided with ribs al', extending through the interior of the same, and the sleeveE, providedwith exterior grooves, g', in correspondent-e with suoli ribs, substantially as described.

CHARLES R. HARTMAN.'

'itnesses:

R. J. GREENHOW, C. .T AGNEW. 

